>> reporter: martha, cairo is rocking tonight. as of right now, it is a peaceful protest there are tens of thousands of people on the street. this is the muslim brotherhood protest that is against the army. they want more morsi reinstated as president. they are told, fat chance. the army of protesters were eye to eye. army blinked and had backed off. it appears as though the idea of turning with thor cannons, live ammunition on the protest that had been peaceful. a lot of times involving women, children, families, was too much for the army. there is a lot of international pressure on the army to allow these protests to continue, even though they certainly have a very bad feeling for the army in terms of what it does to their repetition and their authority there inside of egypt since they took over more than six weeks ago. this is the first time the army has backed down from demand toward the protesters, since the coup. as we look there, we see violence has occurred over the past couple of weeks. nearly 300 people died in that viol